U.S. patent application number 12/675589 was filed with the patent office on 2010-09-23 for lighting device.
Invention is credited to Seok Hoon Kang, Jun Seok Park.
Application Number | 20100238674 12/675589 |
Document ID | / |
Family ID | 40387997 |
Filed Date | 2010-09-23 |
United States Patent
Application |
20100238674 |
Kind Code |
A1 |
Kang; Seok Hoon ; et
al. |
September 23, 2010 |
LIGHTING DEVICE
Abstract
A lighting device comprises: a first substrate comprising a
first connector and a first connection terminal, the first
connector being connected to an external power supply or driving
device, the first connection terminal being electrically connected
to the first connector; and a second substrate connected
electrically to the first connection terminal and comprising a
light emitting device.
Inventors: |
Kang; Seok Hoon; (Gwangju,
KR) ; Park; Jun Seok; (Gwangju, KR) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Family ID: |
40387997 |
Appl. No.: |
12/675589 |
Filed: |
August 20, 2008 |
PCT Filed: |
August 20, 2008 |
PCT NO: |
PCT/KR2008/004855 |
371 Date: |
February 26, 2010 |
Current U.S.
Class: |
362/382 |
Current CPC
Class: |
H01R 12/732 20130101;
F21S 2/005 20130101; H01R 12/716 20130101; H05K 2201/10189
20130101; G02F 1/133612 20210101; H05K 1/142 20130101; H05K
2201/10106 20130101; H01R 12/724 20130101; H05K 3/3447 20130101;
G02F 1/133603 20130101; H05K 3/308 20130101; F21V 23/06 20130101;
H05K 2201/1059 20130101; F21Y 2115/10 20160801 |
Class at
Publication: |
362/382 |
International
Class: |
F21V 21/00 20060101
F21V021/00 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 31, 2007 |
KR |
10-2007-0088342 |
Claims
1. A lighting device comprising: a first substrate comprising a
first connector and a first connection terminal, the first
connector being connected to an external power supply or driving
device, the first connection terminal being electrically connected
to the first connector; and a second substrate connected
electrically to the first connection terminal and comprising a
light emitting device.
2. The lighting device of claim 1, wherein the second substrate
comprises a second connection terminal electrically connected to
the first connection terminal.
3. The lighting device of claim 2, comprising a second connector
connecting the first connection terminal with the second connection
terminal.
4. The lighting device of claim 1, wherein the first substrate
comprises: a first connector unit comprising the first connector;
an extension unit extending from the first connector in a first
direction; and a connection unit extending from the extension unit
in a second direction and comprising the first connection
terminal.
5. The lighting device of claim 4, wherein the second direction is
perpendicular to the first direction.
6. The lighting device of claim 1, wherein the first and second
substrates are coupled by a mounting member.
7. The lighting device of claim 6, wherein the mounting member
comprises adhesives or adhesive tapes.
8. The lighting device of claim 1, wherein top surfaces of the
first and second substrates are disposed on the same horizontal
plane.
9. The lighting device of claim 1, wherein the second substrate has
at least two sides surrounded by the first substrate.
10. A lighting device comprising: a first substrate comprising a
first connector and a plurality of first connection terminals, the
first connector being connected to an external power supply or
driving device, the first connection terminals being electrically
connected to the first connector; and a plurality of second
substrates connected electrically to the first connection terminals
and comprising a light emitting device.
11. The lighting device of claim 10, wherein the first substrate
comprises: a first connector unit comprising the first connector;
an extension unit extending from the first connector in a first
direction; and a connection unit extending from the extension unit
in a second direction and comprising the first connection
terminal.
12. The lighting device of claim 11, wherein the second substrates
are disposed on both sides of the extension unit.
13. The lighting device of claim 11, wherein the second substrates
are disposed on both sides of the connection unit.
14. The lighting device of claim 11, wherein the second direction
is perpendicular to the first direction.
15. The lighting device of claim 10, wherein the first and second
substrates are coupled by a mounting member.
16. The lighting device of claim 15, wherein the mounting member
comprises adhesives or adhesive tapes.
17. The lighting device of claim 10, wherein top surfaces of the
first and second substrates are disposed on the same horizontal
plane.
18. The lighting device of claim 10, comprising a second connector
that electrically connects the first substrate with the second
substrate, wherein the second connector comprises: a first pin
connected electrically to the first substrate, a second pin
connected electrically to the second substrate, and a first body
and second body, the first body supporting the first pin and being
coupled to the first substrate, the second body supporting the
second pin and being coupled to the second substrate, wherein the
first pin is electrically connected to the second pin as the first
body is coupled to the second body.
19. The lighting device of claim 10, wherein each of the second
substrates is electrically connected to the first substrate.
20. The lighting device of claim 10, wherein a separate drive
signal is applied from the first substrate to the second
substrates.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a lighting device.
BACKGROUND ART
[0002] A liquid crystal display (LCD) is used in various electric
devices such as a computer monitor, a television, a mobile
communication terminal, a navigation, etc.
[0003] Because the LCD does not emit light by itself, a backlight
unit for providing light to the LCD is used at the rear of the
LCD.
[0004] Although a cold cathode fluorescent lamp (CCFL) as a
backlight unit has been used as a light source until now, a light
emitting diode (LED) becomes widely used recently.
[0005] The LED is used as a backlight unit of the LCD and also as
light source units of various electron devices requiring light and
lightening devices.
DISCLOSURE OF INVENTION
Technical Problem
[0006] Embodiments provide a lighting device.
[0007] Embodiments also provide a lighting device for driving each
substrate with a light emitting device.
[0008] Embodiments also provide a lighting device that is
fabricated without difficulties and easily repairable when defects
occur.
Technical Solution
[0009] In an embodiment, a lighting device comprises: a first
substrate comprising a first connector and a first connection
terminal, the first connector being connected to an external power
supply or driving device, the first connection terminal being
electrically connected to the first connector; and a second
substrate connected electrically to the first connection terminal
and comprising a light emitting device.
[0010] In an embodiment, a lighting device comprises: a first
substrate comprising a first connector and a plurality of first
connection terminals, the first connector being connected to an
external power supply or driving device, the first connection
terminals being electrically connected to the first connector; and
a plurality of second substrates connected electrically to the
first connection terminals and comprising a light emitting
device.
[0011] The details of one or more embodiments are set forth in the
accompanying drawings and the description below. Other features
will be apparent from the description and drawings and from the
claims.
Advantageous Effects
[0012] Embodiments provide a lighting device.
[0013] Embodiments also provide a lighting device for driving each
substrate with a light emitting device.
[0014] Embodiments also provide a lighting device that is
fabricated without difficulties and easily repairable when defects
occur.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 is a front view of a lighting device according to an
embodiment.
[0016] FIG. 2 is a view of a second substrate in a lighting device
according to an embodiment.
[0017] FIG. 3 is a view illustrating a second connector in a
lighting device according to an embodiment.
MODE FOR THE INVENTION
[0018] Hereinafter, a lighting device will be described in more
detail with reference to the accompanying drawings.
[0019] FIG. 1 is a front view of a lighting device according to an
embodiment. FIG. 2 is a view of a second substrate in a lighting
device according to an embodiment.
[0020] Referring to FIGS. 1 and 2, the lighting device includes a
first substrate 10 and a second substrate 20 installed to the first
substrate 10.
[0021] The first substrate 10 includes a first connector unit 16
with a first connector 11, an extension unit 17 extending from the
first connector unit 16 in a first direction, and a connection unit
18 extending from the extension unit 17 in a second direction
perpendicular to the first direction.
[0022] A plurality of first connectors 11 and first connection
terminals 12 are formed at the first connector unit 16, and the
first connection terminals 12 are formed at each connection unit
18. Moreover, a wiring (not shown) is formed in order to
electrically connect the first connector 11 of the first connector
unit 16 with the first connection terminal 12.
[0023] A plurality of the first connection terminals 12 is disposed
at the connection unit 18.
[0024] The first connector 11 is connected to an external power
supply or driving device and the first connection terminal 12 is
electrically connected to an external power supply or driving
device through the first connector 11.
[0025] The extension unit 17 and the connection unit 18 form a
second substrate mounting portion 19, which is a space where the
second substrate 20 can be mounted.
[0026] As illustrated in FIG. 1, there are eight second substrate
mounting portions 19. The two second substrate mounting portions 19
adjacent to the first connector unit 16 are formed by a space
surrounded by the first connector unit 16, the extension unit 17,
and the connection unit 18.
[0027] The second substrates 20 may be attached to the first
substrate 10. Although one second substrate 20 is attached to the
first substrate 10 as illustrated in FIG. 1, the eight second
substrates 20 can be attached to the first substrate 10.
[0028] A second connection terminal 22 and a light emitting device
21 are formed at the second substrate 20 in order to electrically
connect the light emitting device 21 with the first substrate 10.
Of course, the light emitting device 21 and the second connection
terminal 22 are electrically connected to each other in series or
parallel through a wiring (not shown) included in the second
substrate 20.
[0029] The light emitting device 21 may be installed in plurality.
In FIG. 2, the nine light emitting devices 21 are installed on the
second substrate 20.
[0030] A light emitting diode emitting a white light may be used in
the light emitting device 21, and other light emitting diodes
emitting red, green, and blue lights may be combined and used in
the light emitting device 21.
[0031] The second substrate 20 is electrically connected to the
first connector 11 through the first connection terminal 12 built
in the first substrate 10.
[0032] Each first connection terminals 12 in the first substrate 10
may be connected to the first connector 11. That is, the same drive
signal or different signals may be applied to the first connection
terminals 12 through the first connector 11.
[0033] Accordingly, the light emitting devices 21 installed on the
second substrate 20 may be separately controllable through the
first connector 11 in the first substrate 10.
[0034] For example, if it is assumed that the luminance of light
emitted from any one of the second substrates 20 is represented
with a value of 100, the luminance of light emitted from another
second substrate 20 may be adjusted to a value of 90.
[0035] Additionally, the luminance of light emitted from another
second substrate 20 may be adjusted to a value of 50.
[0036] Therefore, according to the purpose of the lighting device,
an entire or partial luminance of the lighting device can be
appropriately controllable.
[0037] On the other hand, the first substrate 10 and the second
substrate 20 may be more firmly coupled through a mounting member
40. The mounting member 40 may be adhesives or adhesive tapes and
also other devices for mounting.
[0038] According to the lighting device, because the second
substrates 20 with a light emitting device 21 is installed to the
first substrate 10, only the defective second substrate 20 can be
replaced if there are defects in the light emitting device 21 or
the second substrate 20. Therefore, the lighting device is easily
reparable without difficulties.
[0039] Moreover, the lighting device according to an embodiment can
control the light emitting devices 21 by one second substrate 20,
and also can separately control the light emitting devices 21
included in one second substrate 20 based on a circuit design.
[0040] Furthermore, the first substrate 10 and the second substrate
20 do not overlap in a vertical direction. That is, the first
substrate 10 and the second substrate 20 are disposed on the same
horizontal plane. Therefore, heat dissipation characteristic
becomes very excellent.
[0041] On the other hand, the first substrate 10 may be
electrically connected to the second substrate 20 through a second
connector 30 of FIG. 3. Moreover, the first substrate 10 and the
second substrate 20 may be more firmly coupled through the second
connector 30. The second connector 30 will be described in more
detail with reference to FIG. 3.
[0042] FIG. 3 is a view illustrating a second connector for
electrically connecting a first substrate with a second substrate
in a lighting device according to an embodiment.
[0043] The second connector 30 includes a first body 31 and a
second body 32. One of the first and second bodies 31 and 32 is
designed to be inserted into the other one for coupling.
[0044] For example, as illustrated in FIG. 3, the second body 32 is
partially inserted into the first body 31 for coupling.
[0045] A first pin 33 that is electrically connected to the first
connection terminal 12 of the first substrate 10 is formed in the
first body 31, and a second pin 34 that is electrically connected
to the second connection terminal 22 of the second substrate 20 is
formed in the second body 32.
[0046] The first and second pins 33 and 34 are electrically
connected to each other as the first and second bodies 31 and 32
are coupled.
[0047] A solder 35 may be filled in a via hole of the first
substrate 10 in order to obtain more firm electrical and physical
connection between the first pin 33 and the first substrate 10 and
the first connection terminal 12.
[0048] Likewise, a solder 35 may be filled in a via hole of the
second substrate 20 in order to obtain more firm electrical and
physical coupling between the second pin 34, the second substrate
20, and the second connection terminal 22.
[0049] Because the first and second pins 33 and 34 respectively
penetrate the first and second substrates 10 and 20, the first and
second bodies 31 and 32 can be more firmly installed to and
electrically connected to the first and second substrates 10 and
20.
[0050] The lighting device according to an embodiment includes the
first substrate 10 and the plurality of second substrates 20
mounted on the first substrate 10.
[0051] When there is a defective light emitting device 21 in one
second substrate 20, the lighting device removes only one second
substrate with the defective light emitting device 21 and replaces
it with another second substrate 20. Thus, its repairing process is
accomplished without difficulties and costs and time for repairing
can be reduced.
[0052] Any reference in this specification to "one embodiment," "an
embodiment," "example embodiment," etc., means that a particular
feature, structure, or characteristic described in connection with
the embodiment is included in at least one embodiment of the
invention. The appearances of such phrases in various places in the
specification are not necessarily all referring to the same
embodiment. Further, when a particular feature, structure, or
characteristic is described in connection with any embodiment, it
is submitted that it is within the purview of one skilled in the
art to effect such feature, structure, or characteristic in
connection with other ones of the embodiments.
[0053] Although embodiments have been described with reference to a
number of illustrative embodiments thereof, it should be understood
that numerous other modifications and embodiments can be devised by
those skilled in the art that will fall within the spirit and scope
of the principles of this disclosure. More particularly, various
variations and modifications are possible in the component parts
and/or arrangements of the subject combination arrangement within
the scope of the disclosure, the drawings and the appended claims.
In addition to variations and modifications in the component parts
and/or arrangements, alternative uses will also be apparent to
those skilled in the art.
INDUSTRIAL APPLICABILITY
[0054] A lighting device according to an embodiment can be used in
various electron devices and lightening devices.
* * * * *